1 /* 2 * Copyright (c) 2017-2020 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /** 20 * DOC: defines driver functions interfacing with linux kernel 21 */ 22 23 #include <qdf_list.h> 24 #include <qdf_status.h> 25 #include <qdf_module.h> 26 #include <linux/wireless.h> 27 #include <linux/netdevice.h> 28 #include <net/cfg80211.h> 29 #include <wlan_scan_utils_api.h> 30 #include <wlan_cfg80211.h> 31 #include <wlan_cfg80211_scan.h> 32 #include <wlan_osif_priv.h> 33 #include <wlan_scan_public_structs.h> 34 #include <wlan_scan_ucfg_api.h> 35 #include <wlan_cfg80211_scan.h> 36 #include <qdf_mem.h> 37 #include <wlan_utility.h> 38 #include "cfg_ucfg_api.h" 39 #ifdef WLAN_POLICY_MGR_ENABLE 40 #include <wlan_policy_mgr_api.h> 41 #endif 42 #include <wlan_reg_services_api.h> 43 #ifdef FEATURE_WLAN_DIAG_SUPPORT 44 #include "host_diag_core_event.h" 45 #endif 46 47 const struct nla_policy cfg80211_scan_policy[ 48 QCA_WLAN_VENDOR_ATTR_SCAN_MAX + 1] = { 49 [QCA_WLAN_VENDOR_ATTR_SCAN_FLAGS] = {.type = NLA_U32}, 50 [QCA_WLAN_VENDOR_ATTR_SCAN_TX_NO_CCK_RATE] = {.type = NLA_FLAG}, 51 [QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE] = {.type = NLA_U64}, 52 }; 53 54 #if defined(CFG80211_SCAN_RANDOM_MAC_ADDR) || \ 55 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) 56 /** 57 * wlan_fill_scan_rand_attrs() - Populate the scan randomization attrs 58 * @vdev: pointer to objmgr vdev 59 * @flags: cfg80211 scan flags 60 * @mac_addr: random mac addr from cfg80211 61 * @mac_addr_mask: mac addr mask from cfg80211 62 * @randomize: output variable to check scan randomization status 63 * @addr: output variable to hold random addr 64 * @mask: output variable to hold mac mask 65 * 66 * Return: None 67 */ 68 static void wlan_fill_scan_rand_attrs(struct wlan_objmgr_vdev *vdev, 69 uint32_t flags, 70 uint8_t *mac_addr, 71 uint8_t *mac_addr_mask, 72 bool *randomize, 73 uint8_t *addr, 74 uint8_t *mask) 75 { 76 *randomize = false; 77 if (!(flags & NL80211_SCAN_FLAG_RANDOM_ADDR)) 78 return; 79 80 if (wlan_vdev_mlme_get_opmode(vdev) != QDF_STA_MODE) 81 return; 82 83 if (wlan_vdev_is_up(vdev) == QDF_STATUS_SUCCESS) 84 return; 85 86 *randomize = true; 87 memcpy(addr, mac_addr, QDF_MAC_ADDR_SIZE); 88 memcpy(mask, mac_addr_mask, QDF_MAC_ADDR_SIZE); 89 osif_debug("Random mac addr: %pM and Random mac mask: %pM", 90 addr, mask); 91 } 92 93 /** 94 * wlan_scan_rand_attrs() - Wrapper function to fill scan random attrs 95 * @vdev: pointer to objmgr vdev 96 * @request: pointer to cfg80211 scan request 97 * @req: pointer to cmn module scan request 98 * 99 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 100 * to fill random attributes of internal scan request with cfg80211_scan_request 101 * 102 * Return: None 103 */ 104 static void wlan_scan_rand_attrs(struct wlan_objmgr_vdev *vdev, 105 struct cfg80211_scan_request *request, 106 struct scan_start_request *req) 107 { 108 bool *randomize = &req->scan_req.scan_random.randomize; 109 uint8_t *mac_addr = req->scan_req.scan_random.mac_addr; 110 uint8_t *mac_mask = req->scan_req.scan_random.mac_mask; 111 112 wlan_fill_scan_rand_attrs(vdev, request->flags, request->mac_addr, 113 request->mac_addr_mask, randomize, mac_addr, 114 mac_mask); 115 if (!*randomize) 116 return; 117 118 req->scan_req.scan_f_add_spoofed_mac_in_probe = true; 119 req->scan_req.scan_f_add_rand_seq_in_probe = true; 120 } 121 #else 122 /** 123 * wlan_scan_rand_attrs() - Wrapper function to fill scan random attrs 124 * @vdev: pointer to objmgr vdev 125 * @request: pointer to cfg80211 scan request 126 * @req: pointer to cmn module scan request 127 * 128 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 129 * to fill random attributes of internal scan request with cfg80211_scan_request 130 * 131 * Return: None 132 */ 133 static void wlan_scan_rand_attrs(struct wlan_objmgr_vdev *vdev, 134 struct cfg80211_scan_request *request, 135 struct scan_start_request *req) 136 { 137 } 138 #endif 139 140 #ifdef FEATURE_WLAN_SCAN_PNO 141 #if ((LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) || \ 142 defined(CFG80211_MULTI_SCAN_PLAN_BACKPORT)) 143 144 /** 145 * wlan_config_sched_scan_plan() - configures the sched scan plans 146 * from the framework. 147 * @pno_req: pointer to PNO scan request 148 * @request: pointer to scan request from framework 149 * 150 * Return: None 151 */ 152 static void 153 wlan_config_sched_scan_plan(struct pno_scan_req_params *pno_req, 154 struct cfg80211_sched_scan_request *request) 155 { 156 /* 157 * As of now max 2 scan plans were supported by firmware 158 * if number of scan plan supported by firmware increased below logic 159 * must change. 160 */ 161 if (request->n_scan_plans == SCAN_PNO_MAX_PLAN_REQUEST) { 162 pno_req->fast_scan_period = 163 request->scan_plans[0].interval * MSEC_PER_SEC; 164 pno_req->fast_scan_max_cycles = 165 request->scan_plans[0].iterations; 166 pno_req->slow_scan_period = 167 request->scan_plans[1].interval * MSEC_PER_SEC; 168 } else if (request->n_scan_plans == 1) { 169 pno_req->fast_scan_period = 170 request->scan_plans[0].interval * MSEC_PER_SEC; 171 /* 172 * if only one scan plan is configured from framework 173 * then both fast and slow scan should be configured with the 174 * same value that is why fast scan cycles are hardcoded to one 175 */ 176 pno_req->fast_scan_max_cycles = 1; 177 pno_req->slow_scan_period = 178 request->scan_plans[0].interval * MSEC_PER_SEC; 179 } else { 180 osif_err("Invalid number of scan plans %d !!", 181 request->n_scan_plans); 182 } 183 } 184 #else 185 #define wlan_config_sched_scan_plan(pno_req, request) \ 186 __wlan_config_sched_scan_plan(pno_req, request, psoc) 187 188 static void 189 __wlan_config_sched_scan_plan(struct pno_scan_req_params *pno_req, 190 struct cfg80211_sched_scan_request *request, 191 struct wlan_objmgr_psoc *psoc) 192 { 193 uint32_t scan_timer_repeat_value, slow_scan_multiplier; 194 195 scan_timer_repeat_value = ucfg_scan_get_scan_timer_repeat_value(psoc); 196 slow_scan_multiplier = ucfg_scan_get_slow_scan_multiplier(psoc); 197 198 pno_req->fast_scan_period = request->interval; 199 pno_req->fast_scan_max_cycles = scan_timer_repeat_value; 200 pno_req->slow_scan_period = 201 (slow_scan_multiplier * pno_req->fast_scan_period); 202 } 203 #endif 204 205 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0) 206 static inline void 207 wlan_cfg80211_sched_scan_results(struct wiphy *wiphy, uint64_t reqid) 208 { 209 cfg80211_sched_scan_results(wiphy); 210 } 211 #else 212 static inline void 213 wlan_cfg80211_sched_scan_results(struct wiphy *wiphy, uint64_t reqid) 214 { 215 cfg80211_sched_scan_results(wiphy, reqid); 216 } 217 #endif 218 219 /** 220 * wlan_cfg80211_pno_callback() - pno callback function to handle 221 * pno events. 222 * @vdev: vdev ptr 223 * @event: scan events 224 * @args: argument 225 * 226 * Return: void 227 */ 228 static void wlan_cfg80211_pno_callback(struct wlan_objmgr_vdev *vdev, 229 struct scan_event *event, 230 void *args) 231 { 232 struct wlan_objmgr_pdev *pdev; 233 struct pdev_osif_priv *pdev_ospriv; 234 235 if (event->type != SCAN_EVENT_TYPE_NLO_COMPLETE) 236 return; 237 238 osif_debug("vdev id = %d", event->vdev_id); 239 240 pdev = wlan_vdev_get_pdev(vdev); 241 if (!pdev) { 242 osif_err("pdev is NULL"); 243 return; 244 } 245 246 pdev_ospriv = wlan_pdev_get_ospriv(pdev); 247 if (!pdev_ospriv) { 248 osif_err("pdev_ospriv is NULL"); 249 return; 250 } 251 wlan_cfg80211_sched_scan_results(pdev_ospriv->wiphy, 0); 252 } 253 254 #ifdef WLAN_POLICY_MGR_ENABLE 255 static bool wlan_cfg80211_is_ap_go_present(struct wlan_objmgr_psoc *psoc) 256 { 257 return policy_mgr_mode_specific_connection_count(psoc, 258 PM_SAP_MODE, 259 NULL) || 260 policy_mgr_mode_specific_connection_count(psoc, 261 PM_P2P_GO_MODE, 262 NULL); 263 } 264 265 static QDF_STATUS wlan_cfg80211_is_chan_ok_for_dnbs( 266 struct wlan_objmgr_psoc *psoc, 267 u16 chan_freq, bool *ok) 268 { 269 QDF_STATUS status = policy_mgr_is_chan_ok_for_dnbs( 270 psoc, chan_freq, ok); 271 272 if (QDF_IS_STATUS_ERROR(status)) { 273 osif_err("DNBS check failed"); 274 return status; 275 } 276 277 return QDF_STATUS_SUCCESS; 278 } 279 #else 280 static bool wlan_cfg80211_is_ap_go_present(struct wlan_objmgr_psoc *psoc) 281 { 282 return false; 283 } 284 285 static QDF_STATUS wlan_cfg80211_is_chan_ok_for_dnbs( 286 struct wlan_objmgr_psoc *psoc, 287 u16 chan_freq, 288 bool *ok) 289 { 290 if (!ok) 291 return QDF_STATUS_E_INVAL; 292 293 *ok = true; 294 return QDF_STATUS_SUCCESS; 295 } 296 #endif 297 298 #if defined(CFG80211_SCAN_RANDOM_MAC_ADDR) || \ 299 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) 300 /** 301 * wlan_pno_scan_rand_attr() - Wrapper function to fill sched scan random attrs 302 * @vdev: pointer to objmgr vdev 303 * @request: pointer to cfg80211 sched scan request 304 * @req: pointer to cmn module pno scan request 305 * 306 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 307 * to fill random attributes of internal pno scan 308 * with cfg80211_sched_scan_request 309 * 310 * Return: None 311 */ 312 static void wlan_pno_scan_rand_attr(struct wlan_objmgr_vdev *vdev, 313 struct cfg80211_sched_scan_request *request, 314 struct pno_scan_req_params *req) 315 { 316 bool *randomize = &req->scan_random.randomize; 317 uint8_t *mac_addr = req->scan_random.mac_addr; 318 uint8_t *mac_mask = req->scan_random.mac_mask; 319 320 wlan_fill_scan_rand_attrs(vdev, request->flags, request->mac_addr, 321 request->mac_addr_mask, randomize, mac_addr, 322 mac_mask); 323 } 324 #else 325 /** 326 * wlan_pno_scan_rand_attr() - Wrapper function to fill sched scan random attrs 327 * @vdev: pointer to objmgr vdev 328 * @request: pointer to cfg80211 sched scan request 329 * @req: pointer to cmn module pno scan request 330 * 331 * This is a wrapper function which invokes wlan_fill_scan_rand_attrs() 332 * to fill random attributes of internal pno scan 333 * with cfg80211_sched_scan_request 334 * 335 * Return: None 336 */ 337 static void wlan_pno_scan_rand_attr(struct wlan_objmgr_vdev *vdev, 338 struct cfg80211_sched_scan_request *request, 339 struct pno_scan_req_params *req) 340 { 341 } 342 #endif 343 344 /** 345 * wlan_hdd_sched_scan_update_relative_rssi() - update CPNO params 346 * @pno_request: pointer to PNO scan request 347 * @request: Pointer to cfg80211 scheduled scan start request 348 * 349 * This function is used to update Connected PNO params sent by kernel 350 * 351 * Return: None 352 */ 353 #if defined(CFG80211_REPORT_BETTER_BSS_IN_SCHED_SCAN) || \ 354 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)) 355 static inline void wlan_hdd_sched_scan_update_relative_rssi( 356 struct pno_scan_req_params *pno_request, 357 struct cfg80211_sched_scan_request *request) 358 { 359 pno_request->relative_rssi_set = request->relative_rssi_set; 360 pno_request->relative_rssi = request->relative_rssi; 361 if (NL80211_BAND_2GHZ == request->rssi_adjust.band) 362 pno_request->band_rssi_pref.band = WLAN_BAND_2_4_GHZ; 363 else if (NL80211_BAND_5GHZ == request->rssi_adjust.band) 364 pno_request->band_rssi_pref.band = WLAN_BAND_5_GHZ; 365 pno_request->band_rssi_pref.rssi = request->rssi_adjust.delta; 366 } 367 #else 368 static inline void wlan_hdd_sched_scan_update_relative_rssi( 369 struct pno_scan_req_params *pno_request, 370 struct cfg80211_sched_scan_request *request) 371 { 372 } 373 #endif 374 375 #ifdef FEATURE_WLAN_SCAN_PNO 376 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) 377 static uint32_t wlan_config_sched_scan_start_delay( 378 struct cfg80211_sched_scan_request *request) 379 { 380 return request->delay; 381 } 382 #else 383 static uint32_t wlan_config_sched_scan_start_delay( 384 struct cfg80211_sched_scan_request *request) 385 { 386 return 0; 387 } 388 #endif /*(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) */ 389 #endif /* FEATURE_WLAN_SCAN_PNO */ 390 391 int wlan_cfg80211_sched_scan_start(struct wlan_objmgr_vdev *vdev, 392 struct cfg80211_sched_scan_request *request, 393 uint8_t scan_backoff_multiplier) 394 { 395 struct pno_scan_req_params *req; 396 int i, j, ret = 0; 397 QDF_STATUS status; 398 uint8_t num_chan = 0; 399 uint16_t chan_freq; 400 struct wlan_objmgr_pdev *pdev = wlan_vdev_get_pdev(vdev); 401 struct wlan_objmgr_psoc *psoc; 402 uint32_t valid_ch[SCAN_PNO_MAX_NETW_CHANNELS_EX] = {0}; 403 bool enable_dfs_pno_chnl_scan; 404 405 if (ucfg_scan_get_pno_in_progress(vdev)) { 406 osif_debug("pno is already in progress"); 407 return -EBUSY; 408 } 409 410 if (ucfg_scan_get_pdev_status(pdev) != 411 SCAN_NOT_IN_PROGRESS) { 412 status = wlan_abort_scan(pdev, 413 wlan_objmgr_pdev_get_pdev_id(pdev), 414 INVAL_VDEV_ID, INVAL_SCAN_ID, true); 415 if (QDF_IS_STATUS_ERROR(status)) 416 return -EBUSY; 417 } 418 419 req = qdf_mem_malloc(sizeof(*req)); 420 if (!req) 421 return -ENOMEM; 422 423 wlan_pdev_obj_lock(pdev); 424 psoc = wlan_pdev_get_psoc(pdev); 425 wlan_pdev_obj_unlock(pdev); 426 427 req->networks_cnt = request->n_match_sets; 428 req->vdev_id = wlan_vdev_get_id(vdev); 429 430 if ((!req->networks_cnt) || 431 (req->networks_cnt > SCAN_PNO_MAX_SUPP_NETWORKS)) { 432 osif_err("Network input is not correct %d", 433 req->networks_cnt); 434 ret = -EINVAL; 435 goto error; 436 } 437 438 if (request->n_channels > SCAN_PNO_MAX_NETW_CHANNELS_EX) { 439 osif_err("Incorrect number of channels %d", 440 request->n_channels); 441 ret = -EINVAL; 442 goto error; 443 } 444 445 enable_dfs_pno_chnl_scan = ucfg_scan_is_dfs_chnl_scan_enabled(psoc); 446 if (request->n_channels) { 447 uint32_t buff_len; 448 char *chl; 449 int len = 0; 450 bool ap_or_go_present = wlan_cfg80211_is_ap_go_present(psoc); 451 452 buff_len = (request->n_channels * 5) + 1; 453 chl = qdf_mem_malloc(buff_len); 454 if (!chl) { 455 ret = -ENOMEM; 456 goto error; 457 } 458 for (i = 0; i < request->n_channels; i++) { 459 chan_freq = request->channels[i]->center_freq; 460 if ((!enable_dfs_pno_chnl_scan) && 461 (wlan_reg_is_dfs_for_freq(pdev, chan_freq))) { 462 osif_debug("Dropping DFS channel freq :%d", 463 chan_freq); 464 continue; 465 } 466 if (wlan_reg_is_dsrc_freq(chan_freq)) 467 continue; 468 469 if (ap_or_go_present) { 470 bool ok; 471 472 status = 473 wlan_cfg80211_is_chan_ok_for_dnbs(psoc, 474 chan_freq, 475 &ok); 476 if (QDF_IS_STATUS_ERROR(status)) { 477 osif_err("DNBS check failed"); 478 qdf_mem_free(chl); 479 chl = NULL; 480 ret = -EINVAL; 481 goto error; 482 } 483 if (!ok) 484 continue; 485 } 486 len += qdf_scnprintf(chl + len, buff_len - len, " %d", chan_freq); 487 valid_ch[num_chan++] = chan_freq; 488 } 489 osif_debug("Channel-List[%d]:%s", num_chan, chl); 490 qdf_mem_free(chl); 491 chl = NULL; 492 /* If all channels are DFS and dropped, 493 * then ignore the PNO request 494 */ 495 if (!num_chan) { 496 osif_notice("Channel list empty due to filtering of DSRC"); 497 ret = -EINVAL; 498 goto error; 499 } 500 } 501 502 /* Filling per profile params */ 503 for (i = 0; i < req->networks_cnt; i++) { 504 req->networks_list[i].ssid.length = 505 request->match_sets[i].ssid.ssid_len; 506 507 if ((!req->networks_list[i].ssid.length) || 508 (req->networks_list[i].ssid.length > WLAN_SSID_MAX_LEN)) { 509 osif_err(" SSID Len %d is not correct for network %d", 510 req->networks_list[i].ssid.length, i); 511 ret = -EINVAL; 512 goto error; 513 } 514 515 qdf_mem_copy(req->networks_list[i].ssid.ssid, 516 request->match_sets[i].ssid.ssid, 517 req->networks_list[i].ssid.length); 518 req->networks_list[i].authentication = 0; /*eAUTH_TYPE_ANY */ 519 req->networks_list[i].encryption = 0; /*eED_ANY */ 520 req->networks_list[i].bc_new_type = 0; /*eBCAST_UNKNOWN */ 521 522 /*Copying list of valid channel into request */ 523 qdf_mem_copy(req->networks_list[i].channels, valid_ch, 524 num_chan * sizeof(uint32_t)); 525 req->networks_list[i].channel_cnt = num_chan; 526 req->networks_list[i].rssi_thresh = 527 request->match_sets[i].rssi_thold; 528 } 529 530 /* set scan to passive if no SSIDs are specified in the request */ 531 if (0 == request->n_ssids) 532 req->do_passive_scan = true; 533 else 534 req->do_passive_scan = false; 535 536 for (i = 0; i < request->n_ssids; i++) { 537 j = 0; 538 while (j < req->networks_cnt) { 539 if ((req->networks_list[j].ssid.length == 540 request->ssids[i].ssid_len) && 541 (!qdf_mem_cmp(req->networks_list[j].ssid.ssid, 542 request->ssids[i].ssid, 543 req->networks_list[j].ssid.length))) { 544 req->networks_list[j].bc_new_type = 545 SSID_BC_TYPE_HIDDEN; 546 break; 547 } 548 j++; 549 } 550 } 551 552 /* 553 * Before Kernel 4.4 554 * Driver gets only one time interval which is hard coded in 555 * supplicant for 10000ms. 556 * 557 * After Kernel 4.4 558 * User can configure multiple scan_plans, each scan would have 559 * separate scan cycle and interval. (interval is in unit of second.) 560 * For our use case, we would only have supplicant set one scan_plan, 561 * and firmware also support only one as well, so pick up the first 562 * index. 563 * 564 * Taking power consumption into account 565 * firmware after gPNOScanTimerRepeatValue times fast_scan_period 566 * switches slow_scan_period. This is less frequent scans and firmware 567 * shall be in slow_scan_period mode until next PNO Start. 568 */ 569 wlan_config_sched_scan_plan(req, request); 570 req->delay_start_time = wlan_config_sched_scan_start_delay(request); 571 req->scan_backoff_multiplier = scan_backoff_multiplier; 572 573 wlan_hdd_sched_scan_update_relative_rssi(req, request); 574 575 psoc = wlan_pdev_get_psoc(pdev); 576 ucfg_scan_register_pno_cb(psoc, 577 wlan_cfg80211_pno_callback, NULL); 578 ucfg_scan_get_pno_def_params(vdev, req); 579 580 if (req->scan_random.randomize) 581 wlan_pno_scan_rand_attr(vdev, request, req); 582 583 if (ucfg_ie_whitelist_enabled(psoc, vdev)) 584 ucfg_copy_ie_whitelist_attrs(psoc, &req->ie_whitelist); 585 586 osif_debug("Network count %d n_ssids %d fast_scan_period: %d msec slow_scan_period: %d msec, fast_scan_max_cycles: %d, relative_rssi %d band_pref %d, rssi_pref %d", 587 req->networks_cnt, request->n_ssids, req->fast_scan_period, 588 req->slow_scan_period, req->fast_scan_max_cycles, 589 req->relative_rssi, req->band_rssi_pref.band, 590 req->band_rssi_pref.rssi); 591 592 for (i = 0; i < req->networks_cnt; i++) 593 osif_debug("[%d] ssid: %.*s, RSSI th %d bc NW type %u", 594 i, req->networks_list[i].ssid.length, 595 req->networks_list[i].ssid.ssid, 596 req->networks_list[i].rssi_thresh, 597 req->networks_list[i].bc_new_type); 598 599 status = ucfg_scan_pno_start(vdev, req); 600 if (QDF_IS_STATUS_ERROR(status)) { 601 osif_err("Failed to enable PNO"); 602 ret = -EINVAL; 603 goto error; 604 } 605 606 error: 607 qdf_mem_free(req); 608 return ret; 609 } 610 611 int wlan_cfg80211_sched_scan_stop(struct wlan_objmgr_vdev *vdev) 612 { 613 QDF_STATUS status; 614 615 status = ucfg_scan_pno_stop(vdev); 616 if (QDF_IS_STATUS_ERROR(status)) 617 osif_debug("Failed to disable PNO"); 618 619 return 0; 620 } 621 #endif /*FEATURE_WLAN_SCAN_PNO */ 622 623 /** 624 * wlan_copy_bssid_scan_request() - API to copy the bssid to Scan request 625 * @scan_req: Pointer to scan_start_request 626 * @request: scan request from Supplicant 627 * 628 * This API copies the BSSID in scan request from Supplicant and copies it to 629 * the scan_start_request 630 * 631 * Return: None 632 */ 633 #if defined(CFG80211_SCAN_BSSID) || \ 634 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)) 635 static inline void 636 wlan_copy_bssid_scan_request(struct scan_start_request *scan_req, 637 struct cfg80211_scan_request *request) 638 { 639 qdf_mem_copy(scan_req->scan_req.bssid_list[0].bytes, 640 request->bssid, QDF_MAC_ADDR_SIZE); 641 } 642 #else 643 static inline void 644 wlan_copy_bssid_scan_request(struct scan_start_request *scan_req, 645 struct cfg80211_scan_request *request) 646 { 647 648 } 649 #endif 650 651 /** 652 * wlan_scan_request_enqueue() - enqueue Scan Request 653 * @pdev: pointer to pdev object 654 * @req: Pointer to the scan request 655 * @source: source of the scan request 656 * @scan_id: scan identifier 657 * 658 * Enqueue scan request in the global scan list.This list 659 * stores the active scan request information. 660 * 661 * Return: 0 on success, error number otherwise 662 */ 663 static int wlan_scan_request_enqueue(struct wlan_objmgr_pdev *pdev, 664 struct cfg80211_scan_request *req, 665 uint8_t source, uint32_t scan_id) 666 { 667 struct scan_req *scan_req; 668 QDF_STATUS status; 669 struct pdev_osif_priv *osif_ctx; 670 struct osif_scan_pdev *osif_scan; 671 672 scan_req = qdf_mem_malloc(sizeof(*scan_req)); 673 if (!scan_req) 674 return -ENOMEM; 675 676 /* Get NL global context from objmgr*/ 677 osif_ctx = wlan_pdev_get_ospriv(pdev); 678 osif_scan = osif_ctx->osif_scan; 679 scan_req->scan_request = req; 680 scan_req->source = source; 681 scan_req->scan_id = scan_id; 682 scan_req->dev = req->wdev->netdev; 683 684 qdf_mutex_acquire(&osif_scan->scan_req_q_lock); 685 if (qdf_list_size(&osif_scan->scan_req_q) < WLAN_MAX_SCAN_COUNT) 686 status = qdf_list_insert_back(&osif_scan->scan_req_q, 687 &scan_req->node); 688 else 689 status = QDF_STATUS_E_RESOURCES; 690 qdf_mutex_release(&osif_scan->scan_req_q_lock); 691 if (QDF_IS_STATUS_ERROR(status)) { 692 osif_rl_debug("Failed to enqueue Scan Req as max scan %d already queued", 693 qdf_list_size(&osif_scan->scan_req_q)); 694 qdf_mem_free(scan_req); 695 return -EINVAL; 696 } 697 698 return 0; 699 } 700 701 /** 702 * wlan_scan_request_dequeue() - dequeue scan request 703 * @nl_ctx: Global HDD context 704 * @scan_id: scan id 705 * @req: scan request 706 * @dev: net device 707 * @source : returns source of the scan request 708 * 709 * Return: QDF_STATUS 710 */ 711 static QDF_STATUS wlan_scan_request_dequeue( 712 struct wlan_objmgr_pdev *pdev, 713 uint32_t scan_id, struct cfg80211_scan_request **req, 714 uint8_t *source, struct net_device **dev) 715 { 716 QDF_STATUS status = QDF_STATUS_E_FAILURE; 717 struct scan_req *scan_req; 718 qdf_list_node_t *node = NULL, *next_node = NULL; 719 struct pdev_osif_priv *osif_ctx; 720 struct osif_scan_pdev *scan_priv; 721 722 if ((!source) || (!req)) { 723 osif_err("source or request is NULL"); 724 return QDF_STATUS_E_NULL_VALUE; 725 } 726 727 /* Get NL global context from objmgr*/ 728 osif_ctx = wlan_pdev_get_ospriv(pdev); 729 if (!osif_ctx) { 730 osif_err("Failed to retrieve osif context"); 731 return status; 732 } 733 scan_priv = osif_ctx->osif_scan; 734 735 if (qdf_list_empty(&scan_priv->scan_req_q)) { 736 osif_info("Scan List is empty"); 737 return QDF_STATUS_E_FAILURE; 738 } 739 740 qdf_mutex_acquire(&scan_priv->scan_req_q_lock); 741 if (QDF_STATUS_SUCCESS != 742 qdf_list_peek_front(&scan_priv->scan_req_q, &next_node)) { 743 qdf_mutex_release(&scan_priv->scan_req_q_lock); 744 osif_err("Failed to remove Scan Req from queue"); 745 return QDF_STATUS_E_FAILURE; 746 } 747 748 do { 749 node = next_node; 750 scan_req = qdf_container_of(node, struct scan_req, node); 751 if (scan_req->scan_id == scan_id) { 752 status = qdf_list_remove_node(&scan_priv->scan_req_q, 753 node); 754 if (status == QDF_STATUS_SUCCESS) { 755 *req = scan_req->scan_request; 756 *source = scan_req->source; 757 *dev = scan_req->dev; 758 qdf_mem_free(scan_req); 759 qdf_mutex_release(&scan_priv->scan_req_q_lock); 760 osif_debug("removed Scan id: %d, req = %pK, pending scans %d", 761 scan_id, req, 762 qdf_list_size(&scan_priv->scan_req_q)); 763 return QDF_STATUS_SUCCESS; 764 } else { 765 qdf_mutex_release(&scan_priv->scan_req_q_lock); 766 osif_err("Failed to remove scan id %d, pending scans %d", 767 scan_id, 768 qdf_list_size(&scan_priv->scan_req_q)); 769 return status; 770 } 771 } 772 } while (QDF_STATUS_SUCCESS == 773 qdf_list_peek_next(&scan_priv->scan_req_q, node, &next_node)); 774 qdf_mutex_release(&scan_priv->scan_req_q_lock); 775 osif_debug("Failed to find scan id %d", scan_id); 776 777 return status; 778 } 779 780 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)) 781 /** 782 * wlan_cfg80211_scan_done() - Scan completed callback to cfg80211 783 * @netdev: Net device 784 * @req : Scan request 785 * @aborted : true scan aborted false scan success 786 * 787 * This function notifies scan done to cfg80211 788 * 789 * Return: none 790 */ 791 static void wlan_cfg80211_scan_done(struct net_device *netdev, 792 struct cfg80211_scan_request *req, 793 bool aborted) 794 { 795 struct cfg80211_scan_info info = { 796 .aborted = aborted 797 }; 798 799 if (netdev->flags & IFF_UP) 800 cfg80211_scan_done(req, &info); 801 } 802 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) 803 /** 804 * wlan_cfg80211_scan_done() - Scan completed callback to cfg80211 805 * @netdev: Net device 806 * @req : Scan request 807 * @aborted : true scan aborted false scan success 808 * 809 * This function notifies scan done to cfg80211 810 * 811 * Return: none 812 */ 813 static void wlan_cfg80211_scan_done(struct net_device *netdev, 814 struct cfg80211_scan_request *req, 815 bool aborted) 816 { 817 if (netdev->flags & IFF_UP) 818 cfg80211_scan_done(req, aborted); 819 } 820 #endif 821 822 /** 823 * wlan_vendor_scan_callback() - Scan completed callback event 824 * 825 * @req : Scan request 826 * @aborted : true scan aborted false scan success 827 * 828 * This function sends scan completed callback event to NL. 829 * 830 * Return: none 831 */ 832 static void wlan_vendor_scan_callback(struct cfg80211_scan_request *req, 833 bool aborted) 834 { 835 struct sk_buff *skb; 836 struct nlattr *attr; 837 int i; 838 uint8_t scan_status; 839 uint64_t cookie; 840 int index = QCA_NL80211_VENDOR_SUBCMD_SCAN_DONE_INDEX; 841 842 skb = wlan_cfg80211_vendor_event_alloc(req->wdev->wiphy, req->wdev, 843 SCAN_DONE_EVENT_BUF_SIZE + 4 + 844 NLMSG_HDRLEN, 845 index, 846 GFP_ATOMIC); 847 848 if (!skb) { 849 osif_err("skb alloc failed"); 850 qdf_mem_free(req); 851 return; 852 } 853 854 cookie = (uintptr_t)req; 855 856 attr = nla_nest_start(skb, QCA_WLAN_VENDOR_ATTR_SCAN_SSIDS); 857 if (!attr) 858 goto nla_put_failure; 859 for (i = 0; i < req->n_ssids; i++) { 860 if (nla_put(skb, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 861 goto nla_put_failure; 862 } 863 nla_nest_end(skb, attr); 864 865 attr = nla_nest_start(skb, QCA_WLAN_VENDOR_ATTR_SCAN_FREQUENCIES); 866 if (!attr) 867 goto nla_put_failure; 868 for (i = 0; i < req->n_channels; i++) { 869 if (nla_put_u32(skb, i, req->channels[i]->center_freq)) 870 goto nla_put_failure; 871 } 872 nla_nest_end(skb, attr); 873 874 if (req->ie && 875 nla_put(skb, QCA_WLAN_VENDOR_ATTR_SCAN_IE, req->ie_len, 876 req->ie)) 877 goto nla_put_failure; 878 879 if (req->flags && 880 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_SCAN_FLAGS, req->flags)) 881 goto nla_put_failure; 882 883 if (wlan_cfg80211_nla_put_u64(skb, QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE, 884 cookie)) 885 goto nla_put_failure; 886 887 scan_status = (aborted == true) ? VENDOR_SCAN_STATUS_ABORTED : 888 VENDOR_SCAN_STATUS_NEW_RESULTS; 889 if (nla_put_u8(skb, QCA_WLAN_VENDOR_ATTR_SCAN_STATUS, scan_status)) 890 goto nla_put_failure; 891 892 wlan_cfg80211_vendor_event(skb, GFP_ATOMIC); 893 qdf_mem_free(req); 894 895 return; 896 897 nla_put_failure: 898 wlan_cfg80211_vendor_free_skb(skb); 899 qdf_mem_free(req); 900 } 901 902 /** 903 * wlan_scan_acquire_wake_lock_timeout() - acquire scan wake lock 904 * @psoc: psoc ptr 905 * @scan_wake_lock: Scan wake lock 906 * @timeout: timeout in ms 907 * 908 * Return: void 909 */ 910 static inline 911 void wlan_scan_acquire_wake_lock_timeout(struct wlan_objmgr_psoc *psoc, 912 qdf_wake_lock_t *scan_wake_lock, 913 uint32_t timeout) 914 { 915 if (!psoc || !scan_wake_lock) 916 return; 917 918 if (ucfg_scan_wake_lock_in_user_scan(psoc)) 919 qdf_wake_lock_timeout_acquire(scan_wake_lock, timeout); 920 } 921 922 923 /** 924 * wlan_scan_release_wake_lock() - release scan wake lock 925 * @psoc: psoc ptr 926 * @scan_wake_lock: Scan wake lock 927 * 928 * Return: void 929 */ 930 #ifdef FEATURE_WLAN_DIAG_SUPPORT 931 static inline 932 void wlan_scan_release_wake_lock(struct wlan_objmgr_psoc *psoc, 933 qdf_wake_lock_t *scan_wake_lock) 934 { 935 if (!psoc || !scan_wake_lock) 936 return; 937 938 if (ucfg_scan_wake_lock_in_user_scan(psoc)) 939 qdf_wake_lock_release(scan_wake_lock, 940 WIFI_POWER_EVENT_WAKELOCK_SCAN); 941 } 942 #else 943 static inline 944 void wlan_scan_release_wake_lock(struct wlan_objmgr_psoc *psoc, 945 qdf_wake_lock_t *scan_wake_lock) 946 { 947 if (!psoc || !scan_wake_lock) 948 return; 949 950 if (ucfg_scan_wake_lock_in_user_scan(psoc)) 951 qdf_wake_lock_release(scan_wake_lock, 0); 952 } 953 #endif 954 955 /** 956 * wlan_cfg80211_scan_done_callback() - scan done callback function called after 957 * scan is finished 958 * @vdev: vdev ptr 959 * @event: Scan event 960 * @args: Scan cb arg 961 * 962 * Return: void 963 */ 964 static void wlan_cfg80211_scan_done_callback( 965 struct wlan_objmgr_vdev *vdev, 966 struct scan_event *event, 967 void *args) 968 { 969 struct cfg80211_scan_request *req = NULL; 970 bool success = false; 971 uint32_t scan_id = event->scan_id; 972 uint8_t source = NL_SCAN; 973 struct wlan_objmgr_pdev *pdev; 974 struct pdev_osif_priv *osif_priv; 975 struct net_device *netdev = NULL; 976 QDF_STATUS status; 977 978 qdf_mtrace(QDF_MODULE_ID_SCAN, QDF_MODULE_ID_OS_IF, event->type, 979 event->vdev_id, event->scan_id); 980 981 if (!util_is_scan_completed(event, &success)) 982 return; 983 984 osif_debug("vdev %d, scan id %d type %s(%d) reason %s(%d)", 985 event->vdev_id, scan_id, 986 util_scan_get_ev_type_name(event->type), event->type, 987 util_scan_get_ev_reason_name(event->reason), 988 event->reason); 989 990 pdev = wlan_vdev_get_pdev(vdev); 991 status = wlan_scan_request_dequeue( 992 pdev, scan_id, &req, &source, &netdev); 993 if (QDF_IS_STATUS_ERROR(status)) { 994 osif_err("Dequeue of scan request failed ID: %d", scan_id); 995 goto allow_suspend; 996 } 997 998 if (!netdev) { 999 osif_err("net dev is NULL,Drop scan event Id: %d", scan_id); 1000 goto allow_suspend; 1001 } 1002 1003 /* Make sure vdev is active */ 1004 status = wlan_objmgr_vdev_try_get_ref(vdev, WLAN_OSIF_ID); 1005 if (QDF_IS_STATUS_ERROR(status)) { 1006 osif_err("Failed to get vdev reference: scan Id: %d", scan_id); 1007 goto allow_suspend; 1008 } 1009 1010 /* 1011 * Scan can be triggred from NL or vendor scan 1012 * - If scan is triggered from NL then cfg80211 scan done should be 1013 * called to updated scan completion to NL. 1014 * - If scan is triggred through vendor command then 1015 * scan done event will be posted 1016 */ 1017 if (NL_SCAN == source) 1018 wlan_cfg80211_scan_done(netdev, req, !success); 1019 else 1020 wlan_vendor_scan_callback(req, !success); 1021 1022 wlan_objmgr_vdev_release_ref(vdev, WLAN_OSIF_ID); 1023 allow_suspend: 1024 osif_priv = wlan_pdev_get_ospriv(pdev); 1025 if (qdf_list_empty(&osif_priv->osif_scan->scan_req_q)) { 1026 struct wlan_objmgr_psoc *psoc; 1027 1028 qdf_runtime_pm_allow_suspend( 1029 &osif_priv->osif_scan->runtime_pm_lock); 1030 1031 psoc = wlan_pdev_get_psoc(pdev); 1032 wlan_scan_release_wake_lock(psoc, 1033 &osif_priv->osif_scan->scan_wake_lock); 1034 /* 1035 * Acquire wakelock to handle the case where APP's tries 1036 * to suspend immediately after the driver gets connect 1037 * request(i.e after scan) from supplicant, this result in 1038 * app's is suspending and not able to process the connect 1039 * request to AP 1040 */ 1041 wlan_scan_acquire_wake_lock_timeout(psoc, 1042 &osif_priv->osif_scan->scan_wake_lock, 1043 SCAN_WAKE_LOCK_CONNECT_DURATION); 1044 } 1045 } 1046 1047 QDF_STATUS wlan_scan_runtime_pm_init(struct wlan_objmgr_pdev *pdev) 1048 { 1049 struct pdev_osif_priv *osif_priv; 1050 struct osif_scan_pdev *scan_priv; 1051 1052 wlan_pdev_obj_lock(pdev); 1053 osif_priv = wlan_pdev_get_ospriv(pdev); 1054 wlan_pdev_obj_unlock(pdev); 1055 1056 scan_priv = osif_priv->osif_scan; 1057 1058 return qdf_runtime_lock_init(&scan_priv->runtime_pm_lock); 1059 } 1060 1061 void wlan_scan_runtime_pm_deinit(struct wlan_objmgr_pdev *pdev) 1062 { 1063 struct pdev_osif_priv *osif_priv; 1064 struct osif_scan_pdev *scan_priv; 1065 1066 wlan_pdev_obj_lock(pdev); 1067 osif_priv = wlan_pdev_get_ospriv(pdev); 1068 wlan_pdev_obj_unlock(pdev); 1069 1070 scan_priv = osif_priv->osif_scan; 1071 qdf_runtime_lock_deinit(&scan_priv->runtime_pm_lock); 1072 } 1073 1074 QDF_STATUS wlan_cfg80211_scan_priv_init(struct wlan_objmgr_pdev *pdev) 1075 { 1076 struct pdev_osif_priv *osif_priv; 1077 struct osif_scan_pdev *scan_priv; 1078 struct wlan_objmgr_psoc *psoc; 1079 wlan_scan_requester req_id; 1080 1081 psoc = wlan_pdev_get_psoc(pdev); 1082 1083 req_id = ucfg_scan_register_requester(psoc, "CFG", 1084 wlan_cfg80211_scan_done_callback, NULL); 1085 1086 osif_priv = wlan_pdev_get_ospriv(pdev); 1087 scan_priv = qdf_mem_malloc(sizeof(*scan_priv)); 1088 if (!scan_priv) 1089 return QDF_STATUS_E_NOMEM; 1090 1091 /* Initialize the scan request queue */ 1092 osif_priv->osif_scan = scan_priv; 1093 scan_priv->req_id = req_id; 1094 qdf_list_create(&scan_priv->scan_req_q, WLAN_MAX_SCAN_COUNT); 1095 qdf_mutex_create(&scan_priv->scan_req_q_lock); 1096 qdf_wake_lock_create(&scan_priv->scan_wake_lock, "scan_wake_lock"); 1097 1098 return QDF_STATUS_SUCCESS; 1099 } 1100 1101 QDF_STATUS wlan_cfg80211_scan_priv_deinit(struct wlan_objmgr_pdev *pdev) 1102 { 1103 struct pdev_osif_priv *osif_priv; 1104 struct osif_scan_pdev *scan_priv; 1105 struct wlan_objmgr_psoc *psoc; 1106 1107 psoc = wlan_pdev_get_psoc(pdev); 1108 osif_priv = wlan_pdev_get_ospriv(pdev); 1109 1110 wlan_cfg80211_cleanup_scan_queue(pdev, NULL); 1111 scan_priv = osif_priv->osif_scan; 1112 qdf_wake_lock_destroy(&scan_priv->scan_wake_lock); 1113 qdf_mutex_destroy(&scan_priv->scan_req_q_lock); 1114 qdf_list_destroy(&scan_priv->scan_req_q); 1115 ucfg_scan_unregister_requester(psoc, scan_priv->req_id); 1116 osif_priv->osif_scan = NULL; 1117 qdf_mem_free(scan_priv); 1118 1119 return QDF_STATUS_SUCCESS; 1120 } 1121 1122 /** 1123 * wlan_cfg80211_enqueue_for_cleanup() - Function to populate scan cleanup queue 1124 * @scan_cleanup_q: Scan cleanup queue to be populated 1125 * @scan_priv: Pointer to scan related data used by cfg80211 scan 1126 * @dev: Netdevice pointer 1127 * 1128 * The function synchrounously iterates through the global scan queue to 1129 * identify entries that have to be cleaned up, copies identified entries 1130 * to another queue(to send scan complete event to NL later) and removes the 1131 * entry from the global scan queue. 1132 * 1133 * Return: None 1134 */ 1135 static void 1136 wlan_cfg80211_enqueue_for_cleanup(qdf_list_t *scan_cleanup_q, 1137 struct osif_scan_pdev *scan_priv, 1138 struct net_device *dev) 1139 { 1140 struct scan_req *scan_req, *scan_cleanup; 1141 qdf_list_node_t *node = NULL, *next_node = NULL; 1142 1143 qdf_mutex_acquire(&scan_priv->scan_req_q_lock); 1144 if (QDF_STATUS_SUCCESS != 1145 qdf_list_peek_front(&scan_priv->scan_req_q, 1146 &node)) { 1147 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1148 return; 1149 } 1150 1151 while (node) { 1152 /* 1153 * Keep track of the next node, to traverse through the list 1154 * in the event of the current node being deleted. 1155 */ 1156 qdf_list_peek_next(&scan_priv->scan_req_q, 1157 node, &next_node); 1158 scan_req = qdf_container_of(node, struct scan_req, node); 1159 if (!dev || (dev == scan_req->dev)) { 1160 scan_cleanup = qdf_mem_malloc(sizeof(struct scan_req)); 1161 if (!scan_cleanup) { 1162 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1163 return; 1164 } 1165 scan_cleanup->scan_request = scan_req->scan_request; 1166 scan_cleanup->scan_id = scan_req->scan_id; 1167 scan_cleanup->source = scan_req->source; 1168 scan_cleanup->dev = scan_req->dev; 1169 qdf_list_insert_back(scan_cleanup_q, 1170 &scan_cleanup->node); 1171 if (QDF_STATUS_SUCCESS != 1172 qdf_list_remove_node(&scan_priv->scan_req_q, 1173 node)) { 1174 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1175 osif_err("Failed to remove scan request"); 1176 return; 1177 } 1178 qdf_mem_free(scan_req); 1179 } 1180 node = next_node; 1181 next_node = NULL; 1182 } 1183 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1184 } 1185 1186 void wlan_cfg80211_cleanup_scan_queue(struct wlan_objmgr_pdev *pdev, 1187 struct net_device *dev) 1188 { 1189 struct scan_req *scan_req; 1190 struct cfg80211_scan_request *req; 1191 uint8_t source; 1192 bool aborted = true; 1193 struct pdev_osif_priv *osif_priv; 1194 qdf_list_t scan_cleanup_q; 1195 qdf_list_node_t *node = NULL; 1196 1197 if (!pdev) { 1198 osif_err("pdev is Null"); 1199 return; 1200 } 1201 1202 osif_priv = wlan_pdev_get_ospriv(pdev); 1203 1204 /* 1205 * To avoid any race conditions, create a local list to copy all the 1206 * scan entries to be removed and then send scan complete for each of 1207 * the identified entries to NL. 1208 */ 1209 qdf_list_create(&scan_cleanup_q, WLAN_MAX_SCAN_COUNT); 1210 wlan_cfg80211_enqueue_for_cleanup(&scan_cleanup_q, 1211 osif_priv->osif_scan, dev); 1212 1213 while (!qdf_list_empty(&scan_cleanup_q)) { 1214 if (QDF_STATUS_SUCCESS != qdf_list_remove_front(&scan_cleanup_q, 1215 &node)) { 1216 osif_err("Failed to remove scan request"); 1217 return; 1218 } 1219 scan_req = container_of(node, struct scan_req, node); 1220 req = scan_req->scan_request; 1221 source = scan_req->source; 1222 if (NL_SCAN == source) 1223 wlan_cfg80211_scan_done(scan_req->dev, req, 1224 aborted); 1225 else 1226 wlan_vendor_scan_callback(req, aborted); 1227 1228 qdf_mem_free(scan_req); 1229 } 1230 qdf_list_destroy(&scan_cleanup_q); 1231 1232 return; 1233 } 1234 1235 /** 1236 * wlan_cfg80211_update_scan_policy_type_flags() - Set scan flags according to 1237 * scan request 1238 * @scan_req: Pointer to csr scan req 1239 * 1240 * Return: None 1241 */ 1242 #if defined(CFG80211_SCAN_DBS_CONTROL_SUPPORT) || \ 1243 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)) 1244 static void wlan_cfg80211_update_scan_policy_type_flags( 1245 struct cfg80211_scan_request *req, 1246 struct scan_req_params *scan_req) 1247 { 1248 if (req->flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) 1249 scan_req->scan_policy_high_accuracy = true; 1250 if (req->flags & NL80211_SCAN_FLAG_LOW_SPAN) 1251 scan_req->scan_policy_low_span = true; 1252 if (req->flags & NL80211_SCAN_FLAG_LOW_POWER) 1253 scan_req->scan_policy_low_power = true; 1254 } 1255 #else 1256 static inline void wlan_cfg80211_update_scan_policy_type_flags( 1257 struct cfg80211_scan_request *req, 1258 struct scan_req_params *scan_req) 1259 { 1260 } 1261 #endif 1262 1263 #ifdef WLAN_POLICY_MGR_ENABLE 1264 static bool 1265 wlan_cfg80211_allow_simultaneous_scan(struct wlan_objmgr_psoc *psoc) 1266 { 1267 return policy_mgr_is_scan_simultaneous_capable(psoc); 1268 } 1269 #else 1270 static bool 1271 wlan_cfg80211_allow_simultaneous_scan(struct wlan_objmgr_psoc *psoc) 1272 { 1273 return true; 1274 } 1275 #endif 1276 1277 int wlan_cfg80211_scan(struct wlan_objmgr_vdev *vdev, 1278 struct cfg80211_scan_request *request, 1279 struct scan_params *params) 1280 { 1281 struct scan_start_request *req; 1282 struct wlan_ssid *pssid; 1283 uint8_t i; 1284 int ret = 0; 1285 uint8_t num_chan = 0; 1286 uint32_t c_freq; 1287 struct wlan_objmgr_pdev *pdev = wlan_vdev_get_pdev(vdev); 1288 wlan_scan_requester req_id; 1289 struct pdev_osif_priv *osif_priv; 1290 struct wlan_objmgr_psoc *psoc; 1291 wlan_scan_id scan_id; 1292 bool is_p2p_scan = false; 1293 enum wlan_band band; 1294 struct net_device *netdev = NULL; 1295 QDF_STATUS qdf_status; 1296 enum QDF_OPMODE opmode; 1297 uint32_t extra_ie_len = 0; 1298 1299 psoc = wlan_pdev_get_psoc(pdev); 1300 if (!psoc) { 1301 osif_err("Invalid psoc object"); 1302 return -EINVAL; 1303 } 1304 opmode = wlan_vdev_mlme_get_opmode(vdev); 1305 1306 osif_debug("%s(vdev%d): mode %d", request->wdev->netdev->name, 1307 wlan_vdev_get_id(vdev), opmode); 1308 1309 /* Get NL global context from objmgr*/ 1310 osif_priv = wlan_pdev_get_ospriv(pdev); 1311 if (!osif_priv) { 1312 osif_err("Invalid osif priv object"); 1313 return -EINVAL; 1314 } 1315 1316 /* 1317 * For a non-SAP vdevs, if a scan is already going on i.e the scan queue 1318 * is not empty, and the simultaneous scan is disabled, dont allow 2nd 1319 * scan. 1320 */ 1321 if (!wlan_cfg80211_allow_simultaneous_scan(psoc) && 1322 !qdf_list_empty(&osif_priv->osif_scan->scan_req_q) && 1323 opmode != QDF_SAP_MODE) { 1324 osif_err("Simultaneous scan disabled, reject scan"); 1325 return -EBUSY; 1326 } 1327 1328 req = qdf_mem_malloc(sizeof(*req)); 1329 if (!req) 1330 return -EINVAL; 1331 1332 /* Initialize the scan global params */ 1333 ucfg_scan_init_default_params(vdev, req); 1334 1335 req_id = osif_priv->osif_scan->req_id; 1336 scan_id = ucfg_scan_get_scan_id(psoc); 1337 if (!scan_id) { 1338 osif_err("Invalid scan id"); 1339 qdf_mem_free(req); 1340 return -EINVAL; 1341 } 1342 1343 /* fill the scan request structure */ 1344 req->vdev = vdev; 1345 req->scan_req.vdev_id = wlan_vdev_get_id(vdev); 1346 req->scan_req.scan_id = scan_id; 1347 req->scan_req.scan_req_id = req_id; 1348 1349 /* Enqueue the scan request */ 1350 ret = wlan_scan_request_enqueue(pdev, request, params->source, 1351 req->scan_req.scan_id); 1352 if (ret) { 1353 qdf_mem_free(req); 1354 return ret; 1355 } 1356 1357 /* Update scan policy type flags according to cfg scan request */ 1358 wlan_cfg80211_update_scan_policy_type_flags(request, 1359 &req->scan_req); 1360 /* 1361 * Even though supplicant doesn't provide any SSIDs, n_ssids is 1362 * set to 1. Because of this, driver is assuming that this is not 1363 * wildcard scan and so is not aging out the scan results. 1364 */ 1365 if ((request->ssids) && (request->n_ssids == 1) && 1366 ('\0' == request->ssids->ssid[0])) { 1367 request->n_ssids = 0; 1368 } 1369 1370 if ((request->ssids) && (0 < request->n_ssids)) { 1371 int j; 1372 req->scan_req.num_ssids = request->n_ssids; 1373 1374 if (req->scan_req.num_ssids > WLAN_SCAN_MAX_NUM_SSID) { 1375 osif_info("number of ssid %d greater than MAX %d", 1376 req->scan_req.num_ssids, 1377 WLAN_SCAN_MAX_NUM_SSID); 1378 req->scan_req.num_ssids = WLAN_SCAN_MAX_NUM_SSID; 1379 } 1380 /* copy all the ssid's and their length */ 1381 for (j = 0; j < req->scan_req.num_ssids; j++) { 1382 pssid = &req->scan_req.ssid[j]; 1383 /* get the ssid length */ 1384 pssid->length = request->ssids[j].ssid_len; 1385 if (pssid->length > WLAN_SSID_MAX_LEN) 1386 pssid->length = WLAN_SSID_MAX_LEN; 1387 qdf_mem_copy(pssid->ssid, 1388 &request->ssids[j].ssid[0], 1389 pssid->length); 1390 } 1391 } 1392 if (request->ssids || 1393 (opmode == QDF_P2P_GO_MODE) || (opmode == QDF_P2P_DEVICE_MODE)) 1394 req->scan_req.scan_f_passive = false; 1395 1396 if (params->half_rate) 1397 req->scan_req.scan_f_half_rate = true; 1398 else if (params->quarter_rate) 1399 req->scan_req.scan_f_quarter_rate = true; 1400 1401 if (params->strict_pscan) 1402 req->scan_req.scan_f_strict_passive_pch = true; 1403 1404 if ((request->n_ssids == 1) && request->ssids && 1405 !qdf_mem_cmp(&request->ssids[0], "DIRECT-", 7)) 1406 is_p2p_scan = true; 1407 1408 if (is_p2p_scan && request->no_cck) 1409 req->scan_req.scan_type = SCAN_TYPE_P2P_SEARCH; 1410 1411 if (params->dwell_time_active) 1412 req->scan_req.dwell_time_active = params->dwell_time_active; 1413 1414 if (params->dwell_time_active_2g) 1415 req->scan_req.dwell_time_active_2g = 1416 params->dwell_time_active_2g; 1417 1418 if (params->dwell_time_passive) 1419 req->scan_req.dwell_time_passive = params->dwell_time_passive; 1420 1421 if (params->dwell_time_active_6g) 1422 req->scan_req.dwell_time_active_6g = 1423 params->dwell_time_active_6g; 1424 1425 if (params->dwell_time_passive_6g) 1426 req->scan_req.dwell_time_passive_6g = 1427 params->dwell_time_passive_6g; 1428 1429 /* Set dwell time mode according to scan policy type flags */ 1430 if (ucfg_scan_cfg_honour_nl_scan_policy_flags(psoc)) { 1431 if (req->scan_req.scan_policy_high_accuracy) 1432 req->scan_req.adaptive_dwell_time_mode = 1433 SCAN_DWELL_MODE_STATIC; 1434 if (req->scan_req.scan_policy_low_power || 1435 req->scan_req.scan_policy_low_span) 1436 req->scan_req.adaptive_dwell_time_mode = 1437 SCAN_DWELL_MODE_AGGRESSIVE; 1438 } 1439 1440 /* 1441 * FW require at least 1 MAC to send probe request. 1442 * If MAC is all 0 set it to BC addr as this is the address on 1443 * which fw will send probe req. 1444 */ 1445 req->scan_req.num_bssid = 1; 1446 wlan_copy_bssid_scan_request(req, request); 1447 if (qdf_is_macaddr_zero(&req->scan_req.bssid_list[0])) 1448 qdf_set_macaddr_broadcast(&req->scan_req.bssid_list[0]); 1449 1450 if (request->n_channels) { 1451 #ifdef WLAN_POLICY_MGR_ENABLE 1452 bool ap_or_go_present = 1453 policy_mgr_mode_specific_connection_count( 1454 psoc, PM_SAP_MODE, NULL) || 1455 policy_mgr_mode_specific_connection_count( 1456 psoc, PM_P2P_GO_MODE, NULL); 1457 #endif 1458 for (i = 0; i < request->n_channels; i++) { 1459 c_freq = request->channels[i]->center_freq; 1460 if (wlan_reg_is_dsrc_freq(c_freq)) 1461 continue; 1462 #ifdef WLAN_POLICY_MGR_ENABLE 1463 if (ap_or_go_present) { 1464 bool ok; 1465 1466 qdf_status = policy_mgr_is_chan_ok_for_dnbs( 1467 psoc, c_freq, &ok); 1468 1469 if (QDF_IS_STATUS_ERROR(qdf_status)) { 1470 osif_err("DNBS check failed"); 1471 ret = -EINVAL; 1472 goto err; 1473 } 1474 if (!ok) 1475 continue; 1476 } 1477 #endif 1478 req->scan_req.chan_list.chan[num_chan].freq = c_freq; 1479 band = util_scan_scm_freq_to_band(c_freq); 1480 if (band == WLAN_BAND_2_4_GHZ) 1481 req->scan_req.chan_list.chan[num_chan].phymode = 1482 SCAN_PHY_MODE_11G; 1483 else 1484 req->scan_req.chan_list.chan[num_chan].phymode = 1485 SCAN_PHY_MODE_11A; 1486 num_chan++; 1487 if (num_chan >= NUM_CHANNELS) 1488 break; 1489 } 1490 } 1491 if (!num_chan) { 1492 osif_err("Received zero non-dsrc channels"); 1493 ret = -EINVAL; 1494 goto err; 1495 } 1496 req->scan_req.chan_list.num_chan = num_chan; 1497 1498 /* P2P increase the scan priority */ 1499 if (is_p2p_scan) 1500 req->scan_req.scan_priority = SCAN_PRIORITY_HIGH; 1501 1502 if (params->priority != SCAN_PRIORITY_COUNT) 1503 req->scan_req.scan_priority = params->priority; 1504 1505 if (request->ie_len) 1506 extra_ie_len = request->ie_len; 1507 else if (params->default_ie.ptr && params->default_ie.len) 1508 extra_ie_len = params->default_ie.len; 1509 1510 if (params->vendor_ie.ptr && params->vendor_ie.len) 1511 extra_ie_len += params->vendor_ie.len; 1512 1513 if (extra_ie_len) { 1514 req->scan_req.extraie.ptr = qdf_mem_malloc(extra_ie_len); 1515 if (!req->scan_req.extraie.ptr) { 1516 ret = -ENOMEM; 1517 goto err; 1518 } 1519 } 1520 1521 if (request->ie_len) { 1522 req->scan_req.extraie.len = request->ie_len; 1523 qdf_mem_copy(req->scan_req.extraie.ptr, request->ie, 1524 request->ie_len); 1525 } else if (params->default_ie.ptr && params->default_ie.len) { 1526 req->scan_req.extraie.len = params->default_ie.len; 1527 qdf_mem_copy(req->scan_req.extraie.ptr, params->default_ie.ptr, 1528 params->default_ie.len); 1529 } 1530 1531 if (params->vendor_ie.ptr && params->vendor_ie.len) { 1532 qdf_mem_copy((req->scan_req.extraie.ptr + 1533 req->scan_req.extraie.len), 1534 params->vendor_ie.ptr, params->vendor_ie.len); 1535 1536 req->scan_req.extraie.len += params->vendor_ie.len; 1537 } 1538 1539 if (!is_p2p_scan) { 1540 if (req->scan_req.scan_random.randomize) 1541 wlan_scan_rand_attrs(vdev, request, req); 1542 if (ucfg_ie_whitelist_enabled(psoc, vdev) && 1543 ucfg_copy_ie_whitelist_attrs(psoc, 1544 &req->scan_req.ie_whitelist)) 1545 req->scan_req.scan_f_en_ie_whitelist_in_probe = true; 1546 } 1547 1548 if (request->flags & NL80211_SCAN_FLAG_FLUSH) 1549 ucfg_scan_flush_results(pdev, NULL); 1550 1551 /* 1552 * Acquire wakelock to handle the case where APP's send scan to connect. 1553 * If suspend is received during scan scan will be aborted and APP will 1554 * not get scan result and not connect. eg if PNO is implemented in 1555 * framework. 1556 */ 1557 wlan_scan_acquire_wake_lock_timeout(psoc, 1558 &osif_priv->osif_scan->scan_wake_lock, 1559 SCAN_WAKE_LOCK_SCAN_DURATION); 1560 1561 qdf_runtime_pm_prevent_suspend( 1562 &osif_priv->osif_scan->runtime_pm_lock); 1563 1564 qdf_status = ucfg_scan_start(req); 1565 if (QDF_IS_STATUS_ERROR(qdf_status)) { 1566 osif_err("scan req failed with error %d", qdf_status); 1567 if (qdf_status == QDF_STATUS_E_RESOURCES) 1568 osif_err("HO is in progress.So defer the scan by informing busy"); 1569 wlan_scan_request_dequeue(pdev, scan_id, &request, 1570 ¶ms->source, &netdev); 1571 if (qdf_list_empty(&osif_priv->osif_scan->scan_req_q)) { 1572 qdf_runtime_pm_allow_suspend( 1573 &osif_priv->osif_scan->runtime_pm_lock); 1574 wlan_scan_release_wake_lock(psoc, 1575 &osif_priv->osif_scan->scan_wake_lock); 1576 } 1577 } 1578 1579 return qdf_status_to_os_return(qdf_status); 1580 1581 err: 1582 qdf_mem_free(req); 1583 wlan_scan_request_dequeue(pdev, scan_id, &request, 1584 ¶ms->source, &netdev); 1585 return ret; 1586 } 1587 1588 /** 1589 * wlan_get_scanid() - API to get the scan id 1590 * from the scan cookie attribute. 1591 * @pdev: Pointer to pdev object 1592 * @scan_id: Pointer to scan id 1593 * @cookie : Scan cookie attribute 1594 * 1595 * API to get the scan id from the scan cookie attribute 1596 * sent from supplicant by matching scan request. 1597 * 1598 * Return: 0 for success, non zero for failure 1599 */ 1600 static int wlan_get_scanid(struct wlan_objmgr_pdev *pdev, 1601 uint32_t *scan_id, uint64_t cookie) 1602 { 1603 struct scan_req *scan_req; 1604 qdf_list_node_t *node = NULL; 1605 qdf_list_node_t *ptr_node = NULL; 1606 int ret = -EINVAL; 1607 struct pdev_osif_priv *osif_ctx; 1608 struct osif_scan_pdev *scan_priv; 1609 1610 /* Get NL global context from objmgr*/ 1611 osif_ctx = wlan_pdev_get_ospriv(pdev); 1612 if (!osif_ctx) { 1613 osif_err("Failed to retrieve osif context"); 1614 return ret; 1615 } 1616 scan_priv = osif_ctx->osif_scan; 1617 qdf_mutex_acquire(&scan_priv->scan_req_q_lock); 1618 if (qdf_list_empty(&scan_priv->scan_req_q)) { 1619 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1620 osif_err("Failed to retrieve scan id"); 1621 return ret; 1622 } 1623 1624 if (QDF_STATUS_SUCCESS != 1625 qdf_list_peek_front(&scan_priv->scan_req_q, 1626 &ptr_node)) { 1627 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1628 return ret; 1629 } 1630 1631 do { 1632 node = ptr_node; 1633 scan_req = qdf_container_of(node, struct scan_req, node); 1634 if (cookie == 1635 (uintptr_t)(scan_req->scan_request)) { 1636 *scan_id = scan_req->scan_id; 1637 ret = 0; 1638 break; 1639 } 1640 } while (QDF_STATUS_SUCCESS == 1641 qdf_list_peek_next(&scan_priv->scan_req_q, 1642 node, &ptr_node)); 1643 1644 qdf_mutex_release(&scan_priv->scan_req_q_lock); 1645 1646 return ret; 1647 } 1648 1649 QDF_STATUS wlan_abort_scan(struct wlan_objmgr_pdev *pdev, 1650 uint32_t pdev_id, uint32_t vdev_id, 1651 wlan_scan_id scan_id, bool sync) 1652 { 1653 struct scan_cancel_request *req; 1654 struct pdev_osif_priv *osif_ctx; 1655 struct osif_scan_pdev *scan_priv; 1656 QDF_STATUS status; 1657 struct wlan_objmgr_vdev *vdev; 1658 1659 req = qdf_mem_malloc(sizeof(*req)); 1660 if (!req) 1661 return QDF_STATUS_E_NOMEM; 1662 1663 /* Get NL global context from objmgr*/ 1664 osif_ctx = wlan_pdev_get_ospriv(pdev); 1665 if (!osif_ctx) { 1666 osif_err("Failed to retrieve osif context"); 1667 qdf_mem_free(req); 1668 return QDF_STATUS_E_FAILURE; 1669 } 1670 if (vdev_id == INVAL_VDEV_ID) 1671 vdev = wlan_objmgr_pdev_get_first_vdev(pdev, WLAN_OSIF_ID); 1672 else 1673 vdev = wlan_objmgr_get_vdev_by_id_from_pdev(pdev, 1674 vdev_id, WLAN_OSIF_ID); 1675 1676 if (!vdev) { 1677 qdf_mem_free(req); 1678 return QDF_STATUS_E_INVAL; 1679 } 1680 scan_priv = osif_ctx->osif_scan; 1681 req->cancel_req.requester = scan_priv->req_id; 1682 req->vdev = vdev; 1683 req->cancel_req.scan_id = scan_id; 1684 req->cancel_req.pdev_id = pdev_id; 1685 req->cancel_req.vdev_id = vdev_id; 1686 if (scan_id != INVAL_SCAN_ID && scan_id != CANCEL_HOST_SCAN_ID) 1687 req->cancel_req.req_type = WLAN_SCAN_CANCEL_SINGLE; 1688 else if (scan_id == CANCEL_HOST_SCAN_ID) 1689 req->cancel_req.req_type = WLAN_SCAN_CANCEL_HOST_VDEV_ALL; 1690 else if (vdev_id == INVAL_VDEV_ID) 1691 req->cancel_req.req_type = WLAN_SCAN_CANCEL_PDEV_ALL; 1692 else 1693 req->cancel_req.req_type = WLAN_SCAN_CANCEL_VDEV_ALL; 1694 1695 osif_debug("Type %d Vdev %d pdev %d scan id %d sync %d", 1696 req->cancel_req.req_type, req->cancel_req.vdev_id, 1697 req->cancel_req.pdev_id, req->cancel_req.scan_id, sync); 1698 1699 if (sync) 1700 status = ucfg_scan_cancel_sync(req); 1701 else 1702 status = ucfg_scan_cancel(req); 1703 if (QDF_IS_STATUS_ERROR(status)) 1704 osif_err("Cancel scan request failed"); 1705 1706 wlan_objmgr_vdev_release_ref(vdev, WLAN_OSIF_ID); 1707 1708 return status; 1709 } 1710 1711 qdf_export_symbol(wlan_abort_scan); 1712 1713 int wlan_cfg80211_abort_scan(struct wlan_objmgr_pdev *pdev) 1714 { 1715 uint8_t pdev_id; 1716 1717 pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 1718 1719 if (ucfg_scan_get_pdev_status(pdev) != 1720 SCAN_NOT_IN_PROGRESS) 1721 wlan_abort_scan(pdev, pdev_id, 1722 INVAL_VDEV_ID, INVAL_SCAN_ID, true); 1723 1724 return 0; 1725 } 1726 1727 int wlan_vendor_abort_scan(struct wlan_objmgr_pdev *pdev, 1728 const void *data, int data_len) 1729 { 1730 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_SCAN_MAX + 1]; 1731 int ret = -EINVAL; 1732 wlan_scan_id scan_id; 1733 uint64_t cookie; 1734 uint8_t pdev_id; 1735 1736 pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev); 1737 if (wlan_cfg80211_nla_parse(tb, QCA_WLAN_VENDOR_ATTR_SCAN_MAX, data, 1738 data_len, cfg80211_scan_policy)) { 1739 osif_err("Invalid ATTR"); 1740 return ret; 1741 } 1742 1743 if (tb[QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE]) { 1744 cookie = nla_get_u64( 1745 tb[QCA_WLAN_VENDOR_ATTR_SCAN_COOKIE]); 1746 ret = wlan_get_scanid(pdev, &scan_id, cookie); 1747 if (ret != 0) 1748 return ret; 1749 if (ucfg_scan_get_pdev_status(pdev) != 1750 SCAN_NOT_IN_PROGRESS) 1751 wlan_abort_scan(pdev, INVAL_PDEV_ID, 1752 INVAL_VDEV_ID, scan_id, true); 1753 } 1754 return 0; 1755 } 1756 1757 static inline struct ieee80211_channel * 1758 wlan_get_ieee80211_channel(struct wiphy *wiphy, 1759 struct wlan_objmgr_pdev *pdev, 1760 int chan_freq) 1761 { 1762 struct ieee80211_channel *chan; 1763 1764 chan = ieee80211_get_channel(wiphy, chan_freq); 1765 if (!chan) 1766 osif_err("chan is NULL, freq: %d", chan_freq); 1767 1768 return chan; 1769 } 1770 1771 #ifdef WLAN_ENABLE_AGEIE_ON_SCAN_RESULTS 1772 static inline int wlan_get_frame_len(struct scan_cache_entry *scan_params) 1773 { 1774 return util_scan_entry_frame_len(scan_params) + sizeof(qcom_ie_age); 1775 } 1776 1777 static inline void wlan_add_age_ie(uint8_t *mgmt_frame, 1778 struct scan_cache_entry *scan_params) 1779 { 1780 qcom_ie_age *qie_age = NULL; 1781 1782 /* GPS Requirement: need age ie per entry. Using vendor specific. */ 1783 /* Assuming this is the last IE, copy at the end */ 1784 qie_age = (qcom_ie_age *) (mgmt_frame + 1785 util_scan_entry_frame_len(scan_params)); 1786 qie_age->element_id = QCOM_VENDOR_IE_ID; 1787 qie_age->len = QCOM_VENDOR_IE_AGE_LEN; 1788 qie_age->oui_1 = QCOM_OUI1; 1789 qie_age->oui_2 = QCOM_OUI2; 1790 qie_age->oui_3 = QCOM_OUI3; 1791 qie_age->type = QCOM_VENDOR_IE_AGE_TYPE; 1792 /* 1793 * Lowi expects the timestamp of bss in units of 1/10 ms. In driver 1794 * all bss related timestamp is in units of ms. Due to this when scan 1795 * results are sent to lowi the scan age is high.To address this, 1796 * send age in units of 1/10 ms. 1797 */ 1798 qie_age->age = 1799 (uint32_t)(qdf_mc_timer_get_system_time() - 1800 scan_params->scan_entry_time)/10; 1801 qie_age->tsf_delta = scan_params->tsf_delta; 1802 memcpy(&qie_age->beacon_tsf, scan_params->tsf_info.data, 1803 sizeof(qie_age->beacon_tsf)); 1804 memcpy(&qie_age->seq_ctrl, &scan_params->seq_num, 1805 sizeof(qie_age->seq_ctrl)); 1806 } 1807 #else 1808 static inline int wlan_get_frame_len(struct scan_cache_entry *scan_params) 1809 { 1810 return util_scan_entry_frame_len(scan_params); 1811 } 1812 1813 static inline void wlan_add_age_ie(uint8_t *mgmt_frame, 1814 struct scan_cache_entry *scan_params) 1815 { 1816 } 1817 #endif /* WLAN_ENABLE_AGEIE_ON_SCAN_RESULTS */ 1818 1819 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) || \ 1820 defined(CFG80211_INFORM_BSS_FRAME_DATA) 1821 /** 1822 * wlan_fill_per_chain_rssi() - fill per chain RSSI in inform bss 1823 * @data: bss data 1824 * @per_chain_snr: per chain RSSI 1825 * 1826 * Return: void 1827 */ 1828 #if defined(CFG80211_SCAN_PER_CHAIN_RSSI_SUPPORT) || \ 1829 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)) 1830 static void wlan_fill_per_chain_rssi(struct cfg80211_inform_bss *data, 1831 struct wlan_cfg80211_inform_bss *bss) 1832 { 1833 1834 uint32_t i; 1835 1836 if (!bss || !data) { 1837 osif_err("Received bss is NULL"); 1838 return; 1839 } 1840 for (i = 0; i < WLAN_MGMT_TXRX_HOST_MAX_ANTENNA; i++) { 1841 if (!bss->per_chain_rssi[i] || 1842 (bss->per_chain_rssi[i] == WLAN_INVALID_PER_CHAIN_RSSI)) 1843 continue; 1844 data->chain_signal[i] = bss->per_chain_rssi[i]; 1845 data->chains |= BIT(i); 1846 } 1847 } 1848 #else 1849 static inline void 1850 wlan_fill_per_chain_rssi(struct cfg80211_inform_bss *data, 1851 struct wlan_cfg80211_inform_bss *bss) 1852 { 1853 } 1854 #endif 1855 1856 struct cfg80211_bss * 1857 wlan_cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 1858 struct wlan_cfg80211_inform_bss *bss) 1859 { 1860 struct cfg80211_inform_bss data = {0}; 1861 1862 if (!bss) { 1863 osif_err("bss is null"); 1864 return NULL; 1865 } 1866 wlan_fill_per_chain_rssi(&data, bss); 1867 1868 data.chan = bss->chan; 1869 data.boottime_ns = bss->boottime_ns; 1870 data.signal = bss->rssi; 1871 return cfg80211_inform_bss_frame_data(wiphy, &data, bss->mgmt, 1872 bss->frame_len, GFP_ATOMIC); 1873 } 1874 #else 1875 struct cfg80211_bss * 1876 wlan_cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 1877 struct wlan_cfg80211_inform_bss *bss) 1878 1879 { 1880 return cfg80211_inform_bss_frame(wiphy, bss->chan, bss->mgmt, 1881 bss->frame_len, 1882 bss->rssi, GFP_ATOMIC); 1883 } 1884 #endif 1885 1886 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)) 1887 static inline void wlan_cfg80211_put_bss(struct wiphy *wiphy, 1888 struct cfg80211_bss *bss) 1889 { 1890 cfg80211_put_bss(wiphy, bss); 1891 } 1892 #else 1893 static inline void wlan_cfg80211_put_bss(struct wiphy *wiphy, 1894 struct cfg80211_bss *bss) 1895 { 1896 cfg80211_put_bss(bss); 1897 } 1898 #endif 1899 1900 void wlan_cfg80211_inform_bss_frame(struct wlan_objmgr_pdev *pdev, 1901 struct scan_cache_entry *scan_params) 1902 { 1903 struct pdev_osif_priv *pdev_ospriv = wlan_pdev_get_ospriv(pdev); 1904 struct wiphy *wiphy; 1905 struct cfg80211_bss *bss = NULL; 1906 struct wlan_cfg80211_inform_bss bss_data = {0}; 1907 1908 if (!pdev_ospriv) { 1909 osif_err("os_priv is NULL"); 1910 return; 1911 } 1912 1913 wiphy = pdev_ospriv->wiphy; 1914 1915 bss_data.frame_len = wlan_get_frame_len(scan_params); 1916 bss_data.mgmt = qdf_mem_malloc_atomic(bss_data.frame_len); 1917 if (!bss_data.mgmt) { 1918 osif_err("mem alloc failed for bss %pM seq %d", 1919 bss_data.mgmt->bssid, scan_params->seq_num); 1920 return; 1921 } 1922 qdf_mem_copy(bss_data.mgmt, 1923 util_scan_entry_frame_ptr(scan_params), 1924 util_scan_entry_frame_len(scan_params)); 1925 /* 1926 * Android does not want the timestamp from the frame. 1927 * Instead it wants a monotonic increasing value 1928 */ 1929 bss_data.mgmt->u.probe_resp.timestamp = qdf_get_monotonic_boottime(); 1930 wlan_add_age_ie((uint8_t *)bss_data.mgmt, scan_params); 1931 /* 1932 * Based on .ini configuration, raw rssi can be reported for bss. 1933 * Raw rssi is typically used for estimating power. 1934 */ 1935 bss_data.rssi = scan_params->rssi_raw; 1936 1937 bss_data.chan = wlan_get_ieee80211_channel(wiphy, pdev, 1938 scan_params->channel.chan_freq); 1939 if (!bss_data.chan) { 1940 osif_err("Channel not found for bss %pM seq %d chan_freq %d", 1941 bss_data.mgmt->bssid, scan_params->seq_num, 1942 scan_params->channel.chan_freq); 1943 qdf_mem_free(bss_data.mgmt); 1944 return; 1945 } 1946 1947 /* 1948 * Supplicant takes the signal strength in terms of 1949 * mBm (1 dBm = 100 mBm). 1950 */ 1951 bss_data.rssi = QDF_MIN(bss_data.rssi, 0) * 100; 1952 1953 bss_data.boottime_ns = scan_params->boottime_ns; 1954 1955 qdf_mem_copy(bss_data.per_chain_rssi, scan_params->per_chain_rssi, 1956 WLAN_MGMT_TXRX_HOST_MAX_ANTENNA); 1957 1958 bss = wlan_cfg80211_inform_bss_frame_data(wiphy, &bss_data); 1959 if (!bss) 1960 osif_err("failed to inform bss %pM seq %d", 1961 bss_data.mgmt->bssid, scan_params->seq_num); 1962 else 1963 wlan_cfg80211_put_bss(wiphy, bss); 1964 1965 qdf_mem_free(bss_data.mgmt); 1966 } 1967 1968 #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)) && \ 1969 !defined(WITH_BACKPORTS) && !defined(IEEE80211_PRIVACY) 1970 struct cfg80211_bss *wlan_cfg80211_get_bss(struct wiphy *wiphy, 1971 struct ieee80211_channel *channel, 1972 const u8 *bssid, const u8 *ssid, 1973 size_t ssid_len) 1974 { 1975 return cfg80211_get_bss(wiphy, channel, bssid, 1976 ssid, ssid_len, 1977 WLAN_CAPABILITY_ESS, 1978 WLAN_CAPABILITY_ESS); 1979 } 1980 #else 1981 struct cfg80211_bss *wlan_cfg80211_get_bss(struct wiphy *wiphy, 1982 struct ieee80211_channel *channel, 1983 const u8 *bssid, const u8 *ssid, 1984 size_t ssid_len) 1985 { 1986 return cfg80211_get_bss(wiphy, channel, bssid, 1987 ssid, ssid_len, 1988 IEEE80211_BSS_TYPE_ESS, 1989 IEEE80211_PRIVACY_ANY); 1990 } 1991 #endif 1992 1993 void __wlan_cfg80211_unlink_bss_list(struct wiphy *wiphy, uint8_t *bssid, 1994 uint8_t *ssid, uint8_t ssid_len) 1995 { 1996 struct cfg80211_bss *bss = NULL; 1997 1998 bss = wlan_cfg80211_get_bss(wiphy, NULL, bssid, 1999 ssid, ssid_len); 2000 if (!bss) { 2001 osif_info("BSS %pM not found", bssid); 2002 } else { 2003 osif_debug("unlink entry for ssid:%.*s and BSSID %pM", 2004 ssid_len, ssid, bssid); 2005 cfg80211_unlink_bss(wiphy, bss); 2006 wlan_cfg80211_put_bss(wiphy, bss); 2007 } 2008 2009 /* 2010 * Kernel creates separate entries into it's bss list for probe resp 2011 * and beacon for hidden AP. Both have separate ref count and thus 2012 * deleting one will not delete other entry. 2013 * If beacon entry of the hidden AP is not deleted and AP switch to 2014 * broadcasting SSID from Hiding SSID, kernel will reject the beacon 2015 * entry. So unlink the hidden beacon entry (if present) as well from 2016 * kernel, to avoid such issue. 2017 */ 2018 bss = wlan_cfg80211_get_bss(wiphy, NULL, bssid, NULL, 0); 2019 if (!bss) { 2020 osif_debug("Hidden bss not found for Ssid:%.*s BSSID: %pM sid_len %d", 2021 ssid_len, ssid, bssid, ssid_len); 2022 } else { 2023 osif_debug("unlink entry for Hidden ssid:%.*s and BSSID %pM", 2024 ssid_len, ssid, bssid); 2025 2026 cfg80211_unlink_bss(wiphy, bss); 2027 /* cfg80211_get_bss get bss with ref count so release it */ 2028 wlan_cfg80211_put_bss(wiphy, bss); 2029 } 2030 } 2031 void wlan_cfg80211_unlink_bss_list(struct wlan_objmgr_pdev *pdev, 2032 struct scan_cache_entry *scan_entry) 2033 { 2034 struct pdev_osif_priv *pdev_ospriv = wlan_pdev_get_ospriv(pdev); 2035 struct wiphy *wiphy; 2036 2037 if (!pdev_ospriv) { 2038 osif_err("os_priv is NULL"); 2039 return; 2040 } 2041 2042 wiphy = pdev_ospriv->wiphy; 2043 2044 __wlan_cfg80211_unlink_bss_list(wiphy, scan_entry->bssid.bytes, 2045 scan_entry->ssid.ssid, 2046 scan_entry->ssid.length); 2047 } 2048 2049 #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0)) 2050 /* 2051 * wlan_scan_wiphy_set_max_sched_scans() - set maximum number of scheduled scans 2052 * to wiphy. 2053 * @wiphy: pointer to wiphy 2054 * @max_scans: max num scans to be configured 2055 * 2056 */ 2057 static inline void 2058 wlan_scan_wiphy_set_max_sched_scans(struct wiphy *wiphy, uint8_t max_scans) 2059 { 2060 if (max_scans == 0) 2061 wiphy->flags &= ~WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 2062 else 2063 wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 2064 } 2065 #else 2066 static inline void 2067 wlan_scan_wiphy_set_max_sched_scans(struct wiphy *wiphy, uint8_t max_scans) 2068 { 2069 wiphy->max_sched_scan_reqs = max_scans; 2070 } 2071 #endif /* KERNEL_VERSION(4, 12, 0) */ 2072 2073 #if defined(CFG80211_REPORT_BETTER_BSS_IN_SCHED_SCAN) || \ 2074 (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)) 2075 void wlan_scan_cfg80211_add_connected_pno_support(struct wiphy *wiphy) 2076 { 2077 wiphy_ext_feature_set(wiphy, 2078 NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI); 2079 } 2080 #endif 2081 2082 #if ((LINUX_VERSION_CODE > KERNEL_VERSION(4, 4, 0)) || \ 2083 defined(CFG80211_MULTI_SCAN_PLAN_BACKPORT)) && \ 2084 defined(FEATURE_WLAN_SCAN_PNO) 2085 void wlan_config_sched_scan_plans_to_wiphy(struct wiphy *wiphy, 2086 struct wlan_objmgr_psoc *psoc) 2087 { 2088 if (ucfg_scan_get_pno_scan_support(psoc)) { 2089 wlan_scan_wiphy_set_max_sched_scans(wiphy, 1); 2090 wiphy->max_sched_scan_ssids = SCAN_PNO_MAX_SUPP_NETWORKS; 2091 wiphy->max_match_sets = SCAN_PNO_MAX_SUPP_NETWORKS; 2092 wiphy->max_sched_scan_ie_len = SCAN_MAX_IE_LENGTH; 2093 wiphy->max_sched_scan_plans = SCAN_PNO_MAX_PLAN_REQUEST; 2094 2095 wiphy->max_sched_scan_plan_interval = 2096 ucfg_scan_get_max_sched_scan_plan_interval(psoc); 2097 2098 wiphy->max_sched_scan_plan_iterations = 2099 ucfg_scan_get_max_sched_scan_plan_iterations(psoc); 2100 } 2101 } 2102 #endif 2103